Abstract
Superplastic tensile tests of a 17 vol.% SiCp/8090 Al-Li composite were carried out at strain rates ranging from 7.25 × 1-4s-1to 3.46 × 10-1s-1and at temperatures from 773 K to 873 K. A maximum elongation of 300% was obtained at a strain rate of 1.83 × 10-1s-1when tested at a temperature of 848 K which was slightly above the solidus temperature of the composite. The effect of a small fraction of liquid phase on high-strain-rate superplasticity was discussed. Finally, the activation energy of high-strain-rate superplastic deformation was calculated and high-strain-rate superplastic mechanism was discussed.
Original language | English |
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Pages (from-to) | 369-378 |
Number of pages | 10 |
Journal | Applied Composite Materials |
Volume | 3 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1 Jan 1996 |
Keywords
- 8090 aluminum composite
- High strain rate
- Metal matrix composites
- Superplasticity
ASJC Scopus subject areas
- Ceramics and Composites